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[求助]
高斯輸入文件書寫 已有1人參與
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向大家請教一個(gè)問題 MP2/aug-cc-pVTZ//B3LYP/6-311+G**,這種在高斯里是如何實(shí)現(xiàn)的,就是輸入文件怎么寫? 謝謝大家?guī)椭? |
版主 (著名寫手)
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就是直接這樣寫就可以。默認(rèn)就是// 之后的級別先做幾何優(yōu)化。收斂之后用//之前的方法做一次單點(diǎn)能計(jì)算。 比如就寫成下面這個(gè)樣子 %nproc=12 %mem=12GB #p MP2/aug-cc-pVTZ//B3LYP/6-311+G** Title Card Required 0 1 O 2.02108972 4.36731101 0.00000000 H 2.98108972 4.36731101 0.00000000 H 1.70063513 5.27224684 0.00000000 |
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The geometries of the complexes and the respective monomers were fully optimized at the B3LYP/6-311+G** level. The inter- action energies in gas phase used in the discussions were calculated by (1) where Ecomplex, EMAX (or EHOY), and EFA are the MP2/aug-cc-pVTZ//B3LYP/6-311+G** single-point energies of the hydrogen- and halogen-bonded com- plex, MAX (X = F, Cl, Br, NO2, H, OH, CH3, and NH2), HOY (Y = F, Cl, and Br), and FA, respectively. ΔEBSSE is the BSSE (Basis Set Superposition Error) correction estimated at the same level using the stan- dard counterpoise method [13] and the BSSE correc- tion did not been taken into account the structure relax- ation of molecules. ΔEZPE is the zero point energy (ZPE) correction at the B3LYP/6-311+G** level. The previous research [14] indicated the reliability of the MP2/aug-cc-pVTZ level in describing the H-bond energies, which gives us confidence to assume that the level used at least gives reliable trend about H-bond energies. Therefore, the MP2/aug-cc-pVTZ int complex MAX HOY FA BSSE ZPE (or ) , E E E E E E E Δ = − − + Δ + |
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